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Chemistry Essays

Result for Subject Chemistry:
1169 essays
Enclosure Fire Dynamics Chemistry Assignment
5 pages (1658 words) , Download 0 , Assignment
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Superficial- this where is where the skin epidermis is affected but blisters do not form Partial-thickness - burn is where the skin epidermis and dermis are affected and this type of burn is deep. Blisters are formed in these partial degrees burns which take between two to three weeks to heal.
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Silver Nanoparticles Chemistry Research Proposal
5 pages (1427 words) , Download 9 , Research Proposal
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The wavelength at which this absorbance takes place is an indication of the particle size of the element. Most peak absorptions of the solutions occurred between 500 nm and 600 nm of wavelength. This optical spectrum of the nanoparticles is due to surface plasmon absorption. Characterization of metal nanoparticles is very important when it comes to their applications in various fields.
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Material Science Engineering Chemistry Essay
5 pages (1675 words) , Download 0 , Essay
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The mix of favourable chemical, electrical, mechanical, optical, surface, thermal, and toughness properties make sapphire a favored material for high-performance systems and design components. For different semiconductor applications, sapphire is the best decision in correlation with other engineered or synthetic single-crystals.
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Soil Sampling and Analysis Chemistry Lab Report
5 pages (1483 words) , Download 0 , Lab Report
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Nitrates and nitrites are extracted from a soil sample by shaking the soil in a 0.01 M CaSO4 followed by filtration. The nitrate is reduced to nitrite, which then reacts with sulfanilamide in acidic conditions to form a diazo compound. The diazo compound couples with N-1-Napthylethylenediamine dihydrochloride to form a purple dye.
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Experiment: Silver Nanoparticles Chemistry Lab Report
5 pages (1368 words) , Download 0 , Lab Report
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This experiment illustrates the formation of silver nanoparticles using a wet chemical method at room temperature and analyzing their size and optical properties. The vial solutions of silver nanoparticles had distinctive colors, which means that the particle size in each color solution was different.
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Stoichiometry of Ligand Binding and the Stability Constant of a Complex Chemistry Assignment
5 pages (1403 words) , Download 0 , Assignment
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A complex compound of Ni (NH3) n (H2O) 2+6-n is produced when aqua-Ni2+ ion, Ni (H2O) 2+6 interacts with ammonia in water, where n=1 to 6. Apart from (NH3) (H2O) 2+5 no other complexes have been isolated. An investigation by the use of a spectrophotometer and potentiometer indicates the existence of these complexes in the solutions.  
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Investigation of Copper Toxicity in Drinking Water Taken from Macquarie University Fountain Chemistry Coursework
5 pages (1333 words) , Download 0 , Coursework
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To prepare 1L of stock solution 1 g of electrolyte copper was dissolved in 5ml of redistilled HNO3 and was further diluted with distilled water. To get the calibration curve various level of stock dilutions are prepared. A sample solution is also developed to compare the calibration curve and to find out the copper content. 
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Pericyclic Reactions and the Woodward Hoffman Rules Chemistry Assignment
5 pages (1421 words) , Download 0 , Assignment
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The mechanism that is involved in the reaction is a thermally sigmatropic reaction. The high temperature breaks the existing bonds within the molecules thereby leaving molecules free and nitrogen molecules escaping to the atmosphere. The remaining molecules rearranged sigmatropically forming a new compound.  
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Synthesis and Recrystallisation of Adipic Acid Chemistry Lab Report
5 pages (1331 words) , Download 0 , Lab Report
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The method of synthesis of adipic acid is easy and upholds the principles of green chemistry. The objective of the lab, which was to synthesize and characterize adipic acid, was successfully achieved. The melting points of the products yielded are close to the range in the literature. The product yield and recovery was very low.   
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Extraction of Essential Oils from the Cloves Chemistry Lab Report
5 pages (1268 words) , Download 0 , Lab Report
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Four constituents were identified in the essential oil extracted from clove; Eugenol, Carvacrol, Benzoic acid, and 2-Heptanol. Eugenol comprises the largest percentage of the essential oils extracted from the cloves. It comprises more than 85% of the essential oil. Eugenol is the compound that is responsible for the strong aroma of the cloves. 
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Kinetics of Au colloid Monolayer Self-Assembly Chemistry Lab Report
5 pages (1362 words) , Download 1 , Lab Report
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The method is very simple and it essentially consists of immersion of a solid substrate into solutions of a surface hydroxyl group, organosilane polymer, and immobilization of polymer. Gold particles are powerfully bound to the surface of polymer functional groups by covalent bonds. The functional groups provide active sites where Au is attracted.
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Surface Roughness in Milling Chemistry Lab Report
5 pages (1365 words) , Download 0 , Lab Report
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Surface texture is defined by four main features: flaws, lay, waviness and roughness. All the surfaces have a surface roughness of different values, meaning that the surface topography is not completely straight and smooth. There is also a pattern resulting from the machining operation carried out on the workpiece.
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The Effect of Cutting Nose Radius on Surface Roughness Chemistry Coursework
5 pages (1541 words) , Download 0 , Coursework
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Changes in one variable may lead to a change in another variable which may resultantly affect the surface roughness of the final product. The study of these changes gives an impression of how manufacturers can make use of such illustrations to make quick decisions on the product sizes and shapes that they intend to make.
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Chemistry of Wastewater and Treatment Chemistry Coursework
5 pages (1374 words) , Download 0 , Coursework
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Water is vital for hygiene, health plus the output of the community. Safe and clean water is important in our daily life. The process of treating water may differ a little at various places depending on the expertise of the plant plus the water it requires to treat; nevertheless, the fundamental techniques are basically the same.
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Dye-Sensitized Solar Cells: Gratzel Cells Chemistry Coursework
5 pages (1432 words) , Download 0 , Coursework
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Early experimentation of Dye-sensitized solar cells deployed dyes, which were only sensitive to the high-frequency end of the solar spectrum. Newer dyes respond to a wide range of frequencies. These newer dyes have a higher chance of photon conversion into electrons that has an overall efficiency of 90% (Agrawal and Tiwari, 2011).
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Proton Exchange or Polymer Electrolyte Membrane Fuel Cells Chemistry Coursework
5 pages (1510 words) , Download 0 , Coursework
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While breaking the hydrogen molecule into protons and electrons as earlier mentioned, a catalyst is used which in PEMFCs, is usually made from platinum. Typically, PEMFCs function at 800C which is very low thus slowing down the reactions. This necessitates the use of platinum catalyst at the anode and cathode sides to speed up reactions. 
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Plutonium Radioactive Metal Chemistry Coursework
5 pages (1538 words) , Download 0 , Coursework
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Plutonium-238 with a half-life of 87 years undergoes alpha decay. it is used in thermoelectric generators which are used in the generation of power for some space crafts. Plutonium-239 is considered the most important isotope of plutonium. It has a half-life of 24 thousand years. It can sustain a nuclear chain reaction since it is highly fissile.
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The Power of Fire and Fire Dynamics Chemistry Assignment
5 pages (1314 words) , Download 0 , Assignment
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Polymethyl methacrylate is a polymer which is its repeating unit. PMMA has a brittle behavior that makes it fit for car windows; in the case of an accident, no glass cuts to victims. PMMA produced via radical polymerization is very amorphous. Rubber toughening has been applied to it, making it tougher owing to its brittle value.
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Health and Safety in Cyclohexane Manufacturing Chemistry Coursework
5 pages (1394 words) , Download 0 , Coursework
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It is also used in the manufacturing industry for perfume manufacturing, surface coating operations employing lacquers, synthesis of adipic acid in the manufacture of nylon, synthesis of caprolactam and in the extraction of essential oils. Its multi-industrial use has led to large scale manufacturing of cyclohexane.
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Site Selection for Silica Powder Chemistry Essay
5 pages (1428 words) , Download 0 , Essay
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Location of a firm means the selection of the site where the proposed firm would be established. While establishing the firm, an appropriate decision has to be made. Site selection has a significant impact on firm profitability. A good site would lead to success while a bad site would lead to failure of the business enterprise.
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Standard Procedure for the Identification of a Drug of Abuse Chemistry Coursework
5 pages (1587 words) , Download 0 , Coursework
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The drug is a broader term that covers any chemical substance with specific biological effects when taken by humans as well as animals. However, a clear definition depends on specific usages such as recreational drugs, or specific fields of study like pharmacology. From whichever viewpoint or definition, a drug is defined by its biological effects or the effects on the normal operation of the body cells.
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Advantages of the Application of Microfluidic Devices Chemistry Essay
5 pages (1667 words) , Download 0 , Essay
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Microfluidics is a technology that deals with the technology for manipulating small volumes of fluids usually ranging between microliters and picoliters, inside microsystems that have artificial fabrication. Microfluidic systems allow consistency and generic parallelizing, automating, integrating, and miniaturizing of chemical and biological processes.
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Oxidation of Benzaldehyde by Use of Permanganate Chemistry Lab Report
5 pages (1330 words) , Download 1 , Lab Report
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Oxidation processes are mainly involved during the production of carbonyl compounds, which are often found in substances such as aldehydes and ketones. For instance, the oxidation process induced by the permanganate easily converts the primary alcohols into products such as aldehydes, and in other cases, also lead to the production of carboxylic acids. Similarly, the secondary alcohols may also be converted to ketones.
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Safety, Health and Environmental Issues of Ethylene from Full-Range Naphtha Chemistry Essay
7 pages (1885 words) , Download 0 , Essay
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The paper 'Safety, Health and Environmental Issues of Ethylene from Full-Range Naphtha" is a good example of a chemistry essay. Ethylene is a chemical compound taking the formula C2H4. The compound is the number one produced organic compound worldwide. From the World Health Organization, the production of this product in 2005 exceeded 107 Million Metric Tonnes.
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Risk Assessment for Storage and Processes of Formaldehyde Chemistry Term Paper
16 pages (3179 words) , Download 0 , Term Paper
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The paper “Risk Assessment for Storage and Processes of Formaldehyde” is an affecting example of the term paper on chemistry. The table below shows the physical and chemical properties of formaldehyde. The risks that are likely to occur during the storage of formaldehyde can be assessed based on their likelihood of occurring and the consequences.
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Health and Environmental Effects of Asbestos Chemistry Essay
8 pages (2517 words) , Download 0 , Essay
Free
The paper "Health and Environmental Effects of Asbestos" is an outstanding example of a chemistry essay. In recent times, technological innovations and development have improved work operational efficiency (Li., et al, 2015). While some entities still operate using traditional ways some of which expose workers to various types of health and safety risks, some new technological innovations further enhance these risks.
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Carbon Emission as a Global Problem Chemistry Report
12 pages (3534 words) , Download 0 , Report
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Human activities that result in GHGs production include industrial production, farming, motor vehicles, aviation, and electricity production among others (Scientific Assessment 2010). The United States of America contributes greatly to the global carbon emissions with other fast-developing nations the following suit due to increased burning of fossil fuel.
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Carbon Dioxide Chemistry Report
12 pages (3637 words) , Download 0 , Report
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This shows that carbon dioxide is important for sustainable living in a balanced world. Moreover, carbon is only harmless to the atmosphere at controlled levels that do not exceed its percentage proportion in the atmospheric composition.However, various human activities escalate carbon dioxide levels in the atmosphere, posing dangers to the environment (Charles, & Varma, 2010, p.13).
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Carbon Emissions Chemistry Report
14 pages (3970 words) , Download 0 , Report
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Apart from playing the important role of photosynthesis in plants, it is also a weighty component in the adjusting of the globe’s temperatures in what is commonly referred to as the greenhouse effect. Co2 is one of the greenhouse gases, hence plays a vital function as far as warming of the planet is concerned.
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Synthetic Diamond in Tools Chemistry Report
10 pages (2603 words) , Download 0 , Report
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They possess the same atomic structure, physical properties, and chemical composition that real diamonds have. The diamond is also known as CVD diamond or HPHT diamond after the two common production methods referred to the chemical vapor deposition and high-pressure high-temperature crystal formation methods respectively.
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Experiment on Sunscreens Chemistry Report
7 pages (1807 words) , Download 0 , Report
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The absorbance wavelength is between 250 and 300 nm, which means that the screens protect the skin from ultraviolet rays in the UVB region. The Active dry touch lotion shows slightly better UVB absorbing capability compared to the rest of the sunscreens, followed by kids' sunscreen and sport respectively. Below are the active ingredients in each of the sunscreens, and their proportions.
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Silver Nanoparticle Synthesis via Sonochemical Reduction Chemistry Report
7 pages (1965 words) , Download 0 , Report
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In this study, AgNPs were synthesized via the reduction of silver nitrate (AgNO3) using sodium borohydride (NaBH4) as a reducing agent. The influence of concentration and flow rate on the shape and size of the AgNPs produced in an ultrasonic micro-reactor was investigated using Transmission electron microscopy (TEM) for the determination of surface plasmon absorbance.
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Quantization and Transformation of the LP Parameters Chemistry Report
8 pages (2066 words) , Download 0 , Report
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In transmission, the LP parameter is contained as additional information and is also seen as a problem in the process. During LP analysis, the intelligibility and the quality of speech which is coded heavily relies on how accurate the estimated power spectrum envelope is, which is later used in the determination of its LP’s parameters.
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Sporopollenin: Imaging and Spectroscopy Chemistry Literature review
11 pages (3572 words) , Download 0 , Literature review
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Wakil et al. (2010), state that the word sporopollenin was coined by Zetzschel in a description of the extremely resilient exine of spores and pollen as well as other microspores. Archeologists have found pristine pollen grains that have survived inside sedimentary rocks for periods agreed upon as being over 500 million years.
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Carbon Aerogels Chemistry Literature review
11 pages (3210 words) , Download 2 , Literature review
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in 1980 carbon aerogels were created and have become the most preferred aerogel. This is attributed to the fact that carbon aerogels have numerous applications in the industrial world. These applications are dependent on the various properties of carbon aerogels. However, in order to understand these applications, it is equally important to understand how carbon aerogels come into existence.
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Polymers: Polypropylene + Polyamide 6 Blends Chemistry Literature review
11 pages (3156 words) , Download 0 , Literature review
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Both artificial and natural polymers play a significant and pervasive role in everyday life. Polymers are inclusive of a wide variety of categories from the common artificial plastics which include polystyrene to natural biopolymers which include DNA and other proteins that are very significant to biological composition and roles.
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Magnetic Nanoparticles: Ferrofluids Chemistry Lab Report
7 pages (1778 words) , Download 0 , Lab Report
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Commercial magnetite fluids consist of micro-meter particles that cannot be suspended by Brownian motion, but instead, will settle after some time due to a difference in inherent density between the particles and the carrier fluid. The surfactant used overcomes the attractive magnetic and Van der Waals forces between particles in a ferrofluid (Pant, Rashmi, and Krishna).
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Practical for Extraction Ion Profiles to Confirm an ILR Chemistry Research Proposal
6 pages (1974 words) , Download 0 , Research Proposal
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The volatile liquid evaporates due to heat. This alters the chemical composition of the liquid. As a result, the chromatogram of the liquid that has been evaporated would be different from that which has not been evaporated. To solve these problems, the standard collection can be expanded to include different levels of evaporated chromatograms of liquid.
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The Basis of Flame Photometry Chemistry Research Proposal
7 pages (2020 words) , Download 0 , Research Proposal
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Potassium and sodium are very important elements as they perform vital biological functions in the human body. They are required by the body for cellular stability, but levels that are out of normal range can result in severe problems with neuromuscular, cardiac, and renal function (Peate & Dutton, 2014, 201).
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Chemically-Synthesised, Atomically-Precise Gold Clusters Deposited and Activated on Titania Chemistry Term Paper
6 pages (1555 words) , Download 0 , Term Paper
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Considerable attention has been drawn towards clusters of noble metal supported on metal oxides due to their wide applications in catalysis. Illumination of semiconductor particles in a solution of metal salt in the aqueous phase leads to the deposition of nanoparticles of metal oxide on the surface of the semiconductor material.
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Detection of Photodeposition of Gold on Titanium Dioxide Nanoparticles Chemistry Term Paper
6 pages (1719 words) , Download 0 , Term Paper
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In recent years, nanoparticles and nanoclusters of noble metals supported on metal oxides have drawn a lot more interest due to their wide applications in heterogeneous catalysis [5]. According to Chusuei, et al. (2001), Gold (Au) in particular nanoclusters supported on Titanium dioxide (TiO2) has the capability to catalyze some industrial reactions.
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Body Fluid Identification in Forensics Chemistry Literature review
7 pages (2169 words) , Download 0 , Literature review
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In fact, the ability to establish whether or not there are body fluids present and consequently, determining it provides a sample that is later subjected to a series of laboratory tests that extends to DNA analysis, which is deemed to be a fundamental step in a great number of investigations (Virkler & Lednev, 2009).
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The Process Recovery of Alumina from Lower Grade Bauxite Chemistry Research Paper
13 pages (3253 words) , Download 0 , Research Paper
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The ore is wet screened on vibrating or inclined screens. Materials lower than a certain size are rejected by wet screening which also washes the fine material(attached to larger pisolites) and is high in silica. In Queensland Australia, there is Weipa bauxite that is a pisolitic ion in nature and the silica level is decreasing as pisolite size increases.
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The Process Recovery of Alumina from Lower Grade Bauxite Chemistry Research Paper
60 pages (16623 words) , Research Paper
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Options of the third approach are almost independent of the ore. Lime sintering is not viable economically compared to the normal Bayer process but at least produces silica and soda with little quartz, which is an environmental bonus. Acid leaching and especially the SO2 process to recover soda is possible but has a cost element, which is still lower compared to leaching with CO2.
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Developing Membranes with Water Chemistry Literature review
13 pages (3549 words) , Download 0 , Literature review
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The polymer diffusion coefficient can be calculated for each molecular weight through monitoring intercalated mass uptake as a function of time. After comparing the diffusion coefficients as a function of Mw, it is found that the larger polymer moves by reputation while the low weight polymer normally diffuses through the pores.
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Sulfonamide Type Antimicrobial Chemistry Report
10 pages (2682 words) , Download 0 , Report
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The sulfonamides’ least inhibitory concentrations (MIC) against Actinobacillus pleuropneumonia, a veterinary pathogen that is gram-negative, were used. Liquid chromatography of high performance was used to determine the hydrophobic and electronic parameters. Empirically established relationships indicated the dominant function of the ionization’s degree.
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The Relationship between Concentration of Hydrochloric Acid and the Rate of Reaction Chemistry Lab Report
7 pages (1710 words) , Download 0 , Lab Report
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There are some random errors that were exhibited in the experiment as indicated by the outliers but the general trend is an increase. With the same solution not being used in the entire experiment, the reaction times are likely to be faster or slower than is expected and this is likely to bring about random errors.
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How to Make Polystyrene Biodegradable Chemistry Literature review
8 pages (2638 words) , Download 1 , Literature review
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Biodegradation is the chemical process that involves the breakdown of substances via the physiological processes into the environment. The process has been commonly used in organic materials but recent studies have identified processes that can biodegrade synthetic materials. Polystyrene is one of the materials that have been difficult to biodegrade.
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Water Distillation Chemistry Literature review
7 pages (2103 words) , Download 1 , Literature review
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Water desalination is a water treatment process used to remove dissolved salts from the water. The increased water demands, as well as the increased susceptibility to drought and the waning availability of water supply sources, signifies the importance of developing alternative water supply sources, and desalination is a viable water supply source
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Controlled and Modified Atmosphere Packaging Chemistry Report
12 pages (3437 words) , Download 0 , Report
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As mentioned by Church and Parsons (1995, p 143-152), the blended gas is known to slow down the process of product aging to enable reduction in color loss, nasty or unpleasant taste and odor that results from product spoilage, deterioration, and rancidity that are collectively caused by microbes and molds.
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